Visited this museum recently, fairly small but interesting, worth a visit if in the area. Adult admission 3. Parking nearby. No website at present but this link will help
http://www.love-weymouth.co.uk/city/weymouth-dorset/what-to-do/weymouth-d-day-museum/
http://www.love-weymouth.co.uk/city/weymouth-dorset/what-to-do/weymouth-d-day-museum/